Furnace-grate.



GIA. KOHOUT.

FURNACE GRATE. APPLICATION min m1. :0. ma.

1 ,1 96,246. Patented Aug. 29,1916.

4 SHEETS-*SHEEI I.

G. A. KOHOUT.

FURNACE GRATE. nrucmon FILIID Mil-30. ma.

Patented Aug. 29, 1916.

4 SHEETS-SHEET 2.

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G. A. KOHOU'I FURNACE GRATE.

APPLlCATlON HLEO um. 30. ms.

1,196,246. Patented Aug. 29, 1916.

4 SHEETS-SHIN 3.

G. A. KOHOUT.

FURNACE 0am.

APPLICATION FILED IAN-30. l9l3. 1,1 96,246. Patented Aug. 29,1916.

4 SHEETS-SHEET 4.

GEORGE A. KOHOUT, OF CHICAGO,

ILLINOIS, ASSIGNOR TO SHEAR-KLEAN GRATE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FURNACE-GRATE.

Specification of Letters Patent.

Patented Aug. 29, 1916.

Application filed January 30, 1913. Serial No. 745,211.

To all whom it may concern:

Be it known that I, Gnonon A. Konotrr, a citizen of the United States, residing at Chicago, in the county of Cool; and State of Illinois, have invented certain new and useful Improvements in Furnace-Grates, of

which the following is a specification.

This invention relates to unprovemcnts in grates, though not necessarily limited in its use to furnaces.

More particularly the invention relates to a grate embodying rocking, shift-able and dumping bars. and to the construction and manner of assembling the component parts of the grate, and one of the objects of the invention is to provide an improved grate. of this type, which will be simple, durable and cheap in construction and effective and ctlicient in operation.

A further object is to provide improved means for causing a relative shifting of the 'rate bars intermediate the rocking and dumping positions thereof, and a still further object is to provide an improved grate of this class, and one in which the grate bars may be individually and readily removed as well as replaced.

To the attainment of these ends, and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination, and arrangement of the several parts hereinafter more fully described and claimed as shown in the accompanying drawings exemplifying the invention and in which;

Figure 1 is a top plan view of an improved grate of this type, constructed in accordance with the principles of this invention, showing parts omitted and parts in section for the sake of clearness. Fig. 2 is a sectional view taken on line 22, Fig. 1. Fig. 3 is a sectional view taken on line 3-3, Fig. 1. Fi 4 is a sectional view taken on line 4-1, 1* ig. 1. Fig. 5 is a sectional view taken on line 5, Fi 1. Fig. 6 is a detailed perspective view 0 one of the bearing members of the grate bars. Fig. 7 is a perspective view of another one of the bearing members of the grate bars. Fig. 8 is a perspective view of one of the side members of the supporting frame. Fi 9 is a. perspective view of one of the en members of the supporting frame. Fig. 10 is a sectional View on llne 10-10, Fig. 3. Fig. 11 is a view taken on line 1111, Fig. 2.

Referring more particularly to the drawings in the present exemplification of this mvention, numeral 15 designates generally the fire pit of a furnace setting 16. The usual dead plate 17 is arranged adjacent to the fire door and is provided with an offset, portion 18, forming a supporting shoulder. A similar supporting shoulder 19, is arranged adjacent to the rear wall of the furnace, and these two supports, 18 and 1S). serve to hold the grate supporting frame in position.

The frame comprises spaced side membars 20 and end members 21, the former being preferably provided with projecting portions 22 at the extremities thereof, having recesses 23 therein. These projecting portions form shoulders 21, which engage and rest upon the supports 18 and 15). The end members 21 are provided with tongue portions 25, at their extremities which are of a size and shape to enter the respective recesses 23 in the side members, and fastening devices, such as bolts or the like are provided which pass through registering apparatus in the walls of the recesses and the tongues for securing the frame members together.

The side members are provided with a plurality of upwardly opening recesses 26, spaced longitudinally of the member, and hose recesses are adapted to receive projections 27 and 28 on the bearing members 29 and 30, and the bearing members are socured in position with respect to the side members in any desired or suitable manner, preferably by means of fastening devices 31, so that the bearing members may be readily removed when desired. The upper extremities of each of the bearing members are provided with spaced ribs 32, as shown more clearly in Figs. 1, (3 and 7.

lVhen more than one section of grate bars is employed that is when the width of the furnace is such as to necessitate such use. two of the frames thus described may be assembled, side by side, as shown more clearly in Figs. 1 and 4. When thus sembled the adjacent side members 20, will be spaced from each other and are held spaced by means of the bearing members 29 which abut each other and the openings 33 and 34 in the bearings are so arranged that the journal pins of the grate bars to be hereinafter described will not interfere with each other.

Some of the bearing members 30 are provided with laterally projecting portions 35, of tubular configuration, for a purpose to be hereinafter described.

he grate bars 36 are all of a similar construction and comprise a body constructed of any material suitable for the purpose, and durin the process of the formation of these grate bars, steel trunnions or journal pins 37 are formed or cast into the body so that they will project from the ends thereof. Bearing pins 38. which are also preferably of steel, are cast into the body 36 of the grate bar while the latter is being formed. By thus casting the bearing pins in the grate element, it will be manifest that after the element has been formed it is not necessary to dress the pins or bearings so as to make them fit in the journal openings of the bearing members, but being of steel or of a very hard substance, they are of the proper size and shape when they are .formed into the body of the grate element, thus dispensing with the operation of dressin The grate bars are assemble in the frame in any suitable or convenient manner, and the bodies of the bars are of a length to terminate short of the respective side members of the frame, so as to permit of a longitudinal movement of the bar, and of its journal, with res eet to the bar.

In 0110! to prevent a longitudinal movement of certain of the grate bars, the tubular projection 35 is provided on the bearing elements 30, see Figs. 5 and 7, and these tubular projections are of such size and length that they will project through the respective openin s 26, in the side members 20 and beyond the inner faces thereof, to abut the ends of the respective grate bars 36. These hearing members, with the projection 3:) are arranged alterrmtely with respect to hearing members 2!), so that the alternate grate bars will be capable of longitudinal shiftin movement, while alternate bars will be held a ainst such shifting movement. This is resirable in order to effect a shearing action of the adjacent grate bars to cut or shear the clinkers. All of the grate bars thus mounted are capable of simultaneous rocking movement, and in order to effect this movement there is provided an operating element 39, see Fig. 2 pivotally supported adjacent to the front 0 the furnace.

A bar or member 40 is pivotally connected in any suitable manner with all of the grate bars, and is in turn connected by a link 41 with the element 39. A detachable handle 42 is provided so as to rock the element 39, and through the medium of the link 41, shift the bar 40; and thereby impart a rocking or oscillating movement to the grate bars. In order to effect the relative shifting movement of the grate bars, the side members 520 of the supporting frame are provided with cum projections 43 which are areferably arranged below the hen ring memers 29 and 30 and project laterally from the inner faces of the side members. These cams 43 are spaced from each other longitudinally of the member 20, and are so arranged that one of the cam members will be disposed adjacent each end of the alternate grate bars and adjacent the ends of the rate bars which are journaled in the hearing members 29. Each cam is provided with a straight portion 44. Each cam also has an outwardly projecting inclined portion 45, adjacent one end of the straight portion and an inwardly projecting inclined portion 46, adjacent the other end of the straight portion 44, while there is provided another straight portion 47 adjacent the other end of the inclined portion 46. The cam is provided with still another straight portion =18 adjacent the end of the inclined portion 45.

Journaled on the bearing pins 38 are antifriction rollers 49, which engage and co- 0 aerate with the faces of the res iective cams 4. The straight )OI'tlOXl M oi the cam is so disposed that when the grate bar is flat, the anti-friction roller 49 will be adjacent this portion, and the flat portion bl is of such a length that the grate bar may be oscillated or rocked in its bearing sufliciently to shake downl the fire, and during this shaking movement of the grate, all of the grate bars will be rocked substantially to the same extent.

With this improved construction the operation of the grate is as follows: Assuming the parts to be in the position shown in Figs. 4 and 5, the anti-friction rollers 49 on the grate bars will be adjacent the straight portions 44 of the cams and the bars may we rocked by oscillating the handle 42 to such an extent that the anti-friction rollers 1 will not pass out of engagement with the straight portions -l-l. \Vhen it is desired to cause a shearing action of the. grate bars, the handle 42 is rocked to a greater extent, which, during the movement of the grate bars, in one direction, will cause the iintifriction rollers to pass off the straight portion and into engagement with either one of the inclined portions 45 and -16, accordmg to the direction of the movement of the. handle. Inasmuch as these cams are located adjacent the alternate grate bars. and the remaining grate bars are held against longitudinal movement by the projections 35 and the bearing members 30, it will be 1 manifest that only the alternate bars will be thus shifted longitudinally, and this shiftin movement will cause a shearing action. I3 imparting a still reater rocking movement to the grate bars, t ie anti-friction rollers will be caused to pass off of the inclined portions 45 and 46 of the cam, and on to the respective straight portions 47 and 48 thereof, and during the time that the antifriction rollers are in engagement with the respective portions 47 and 48 of the earn, the dumping operation of the grate will be effected.

With this improved construction it will be manifest that the component parts are so arranged and constructed that they may be not only readily assembled and detached, but new parts may be readily supplied and placed in position, and furthermore there will be no machining necessary to dress or shape the hearing or trunnion members of the grate bars after the grate bars have been formed, owing to the fact that the steel or hardened trunnion or journal pins are employed. While in the present form of the invention the preferred forms of the invention and the. manner in which the parts are constructed and assembled have been shown and described it is to be understood that many changes may be made in the details of the construction and in the arrangement of the arts without departing from the spirit 0 the invention.

What is claimed as new is 1. In a grate, the combination of grate bars, means for rocking all of said bars in the same direction and means for simultaneously shifting certain of the bars in a 1ongitudinal direction relatively to the other 2. In a grate, the combination of grate bars, means for imparting a rocking and a dumping motion to the bars, means ada ted to shift certain of the bars longitudinal y as they are rocked, and means for holding certain of the bars against longitudinal movement.

3. In a grate, the combination of grate bars having longitudinally overla ping fingers, and means for rocking all 0 said bars and means for simultaneously shifting certain of the bars in a longitudinal direction relatively to the other bars.

4. In a grate, the combination of grate bars, means for rockin the bars simultaneously, means for shi ting certain of the bars longitudinally as they are rocked and with relation to the other bars, and then dum ing all of the bars, and means for holding certain of the bars against longitudinal movement when rocked.

6. A grate embodying rocking bars, means for roc ting the bars simultaneously, means adapted to shift certain of the bars longitudinally as they are rocked, and means for holding certain of the bars against longitudinal movement when rocked, the first said means embodying a cam and a cooperating element, movable relatively one with relation to the other.

6. In a grate, the combination of a frame, grate bars supported thereby, a cam device, and a coiiporating element, one of which is connected with some of the grate bars and the other with the frame and being relatively movable, the cam device and element operating when the grate bars are rocked to cause the respective bars to be shifted longitudinally, means for holding some of the bars against longitudinal lllOVGll'lOllb when rocked, and means for rocking the bars.

7. In a grate, the combination of a frame comprising side and end members connected together, grate bars supported by the side members, cams connected with the side members, means connected with certain of the bars and cooperating with the cams and operating when the said bars are rocked to move them longitudinally, means for bolding certain of the bars against a shifting movement when rocked, and means for rocking the bars.

8. In a grate, the combination ofa frame comprising side and end members connected together, grate bars supported by the side members, cams connected with the side members, means connected with the bars and cooperatin with the cams for imparting a longitudinal movement of the alternate bars when rocked, intercngaging means between the frames and the remaining alternate bars for holding the latter a ainst longitudinal movement when r0cl e(, and means for rocking all of said bars.

9. In a grate, the combination of a frame comprising side and end members connected together, grate ba rs sup )orted thereby, some of the grate bars and the side members hein provided one with a projection and the ot ier with a cooperating cam, said cams and projections operating to cause a longitudinal shifting of the respective bars when the latter are rocked, means for rocking the bars, said cams and projections being arranged adjacent alternate bars, and stops arranged between the frame and the ends of the other bars to hold the latter against longitudinal movement when rocked.

10. In a grate, the combination of grate bars, means for rocking the same forwardly and backwardly, and means for relatively shifting the bars during a portion only of their rocking movement.

11 In a grate, the combination of grate bars, means for rocking the same forwardly and hackwardly, means for rocking all of the bars. means for shifting alternate bars longitudinally, when rocked, said bars being first rocked, then longitudinally shifted and ill) lill) then dumped during each complete forward and each complete return rocking movement of the grate bars, and stop devices for holding alternate bars against longitudinal movement when rocked.

12. In a grate, the combination of a frame comprising separate side and end members connected together, bearings supported by the side members, grate bars journaled in the bearings, stops for holding alternate bars against longitudinal movement in their bearings, means adjacent the remaining a1- ternate bars for shifting them in their bearings when rocked, said means embodying a cam and a projection, one on the frame and the other on the bar, said cam being shaped to permit the respective bars to rock with the remaining bars and without shifting the bars, said cam then 0 crating to shift the adjacent bars longitudinally, and means for rockin the bars.

13. n a grate, the combination of a frame comprising separate side and end members having projections and recesses, one receiving the other, and fastening devices for securing the parts together, bearing members connected with the side members, grate bars jonrnalcd in the bearing members, means for rocking the rrate bars and for dumping them, and cam evices for effecting a longitudinal shifting of certain of the bars at points in their operation between the rocklive cents ing and dumping positions of the bars and during their rocking movement 14. In a grate, the combination of a frame comprising separate side and end members having projections and recesses, one receiving the other, and fastening devices for securing the parts together, bearing members connected with the side members, grate bars journaled in the bearing members, means for rocking the grate bars and for dumping them cam devices for effecting a longitudinal shifting of certain of the ars at points in their operation between the rocking and dumping positions of the bars and means 0 eratin to hold alternate bars against longitudina movement.

15. In a grate, the combination of grate bars, means for rocking and dumping the some means for efl'ecting a longitudinal shifting movement of certain of the grate bars during the complete rocking movement of the bars in one direction, and means for holding certain of the bars against longitudinal movement.

In testimony whereof I have hereunto signed my name in the presence of two witnesses, this 28th day of January 1913.

GEORGE A. KOI-IOUT.

Witnesses:

G. V. DOMARUS, J r., W. Hanomo.

each, by addressing the "Commissioner of Patents.

Weehington, D. 0. 

